This study was conducted with the aim to identify the percentage of indicators of cognitive development of children aged (3-8) years in Landfill (TPA) 2 Karya Jaya, Kertapati Subdistrict, Palembang City. The population in this study was children aged (3-8) years who participated in non-formal learning activities at The Sriwijaya Suburban School with a selected sample of 13 children using purpos…